摘要:
Provided is a colored contact lens in which a colored band (22) is disposed at a boundary part between a dark part (12) and a white part (14) of an eye, and a density is gradually changed from the dark part to the white part of the eye such that the density of this colored band (22) decreases from an inner circumference side to an outer circumference side. As a result, a novel colored contact lens is provided with which it is possible to bring out beauty of the white part (14) of the eye, which has been ignored by conventional technology, while an impression is maintained that is as natural and elegant as possible by avoiding an artificial impression such as that found in conventional technology.
摘要:
Provided is an ophthalmic lens, from which the elution of a coloring agent can be prevented effectively even when the ophthalmic lens is produced by polymerizing a polymerizable composition containing the coloring agent or when the ophthalmic lens is produced by printing an ink composition containing a coloring agent on a lens precursor by a know printing technique such as an inkjet printing method to allow the coloring agent to penetrate into the lens precursor. The ophthalmic lens is produced using a non-polymerizable compound represented by a specific structural formula as a coloring agent.
摘要:
A presbyopia contact lens set especially for a user who has worn spherical contact lenses, a designing method for a presbyopia contact lens, and a manufacturing method for a presbyopia contact lens that uses such design method. The presbyopia contact lens set configured by combining a plurality of types of presbyopia contact lens having different specifications lens powers, includes the plurality of types of presbyopia contact lenses in which the radial lens power profile in a near-use region and that in a far-use region are defined using mutually different functions, the function for defining the radial lens power profile in the far-use region is set in accordance with a specifications lens power, and the radial lens power rate-of-change in the far-use region is made larger for lenses having a small specifications lens power than for lenses having a large specifications lens power.
摘要:
A contact lens including a circumferential positioning member (40, 42, 44, 46) that can selectively set up a first stable state where a superficial center (30) of a second power zone (24) is decentered on a symmetrical meridian (22) from a geometrical center (20) of an optical zone (14) and an orthogonal meridian (34) perpendicular to the symmetrical meridian (22) with the lens worn on a right eye is circumferentially tilted by a first angle relative to a vertical line (50) of the eye, and a second stable state where the orthogonal meridian (34) under condition in which the lens is worn on a left eye with the right eye wearing state inverted upside down is circumferentially tilted by a second angle on the opposite side of the first angle relative to the vertical line (50), as well as a visible indicator mark (48) for identifying a lens orientation.
摘要:
A colored contact lens (10) comprising an iris-coloring part (40) that is to be overlapping an iris area (38) of a wearer's eyeball (12) and/or a circular colored band (42) that is to be overlapping inner and outer circumferential sides across a boundary (36) between a cornea (14) and a sclera (34), wherein centers of the iris-coloring part (40) and/or the circular colored band (42) are skewed to one side from a lens geometric center (20) on a radial direction line (22), the radial direction line (22) passing through the lens geometric center (20), and a positioning means is provided to position a lens circumferential direction position so as to stabilize the radial direction line (22) at a position extending in a lateral direction of the wearer's eyeball (12).
摘要:
To provide a contact lens with novel structure that is able to achieve both stability of the lens circumferential position in the worn state and improved wearing comfort at a high level. A first thick part (34) and a second thick part (36) are provided on a peripheral zone (30) at both left and right sides such that each center-of-gravity position of both the first thick part (34) and the second thick part (36) is positioned below a horizontal diametrical line (16). A third thick part (38) is provided on the peripheral zone (30) below an optical zone (28). An upper thin part (40) and a lower thin part (42) are provided respectively at an upper peripheral zone positioned above the optical zone (28) and a lower peripheral zone positioned below the optical zone (28) and at an outer circumference side of the third thick part (38).
摘要:
A decentered type contact lens including: an optical zone provided in a center part of the contact lens; a peripheral zone provided on an outer circumference of the optical zone; an optical center of the optical zone being set to deviate from a lens geometric center; and a circumferential direction alignment mechanism for setting a lens circumferential direction position in a worn state, the contact lens being characterized in that: a center-of-gravity deviation in relation to the lens geometric center is set for the peripheral zone, and a center-of-gravity position shift accompanying deviation of the optical center of the optical zone in relation to the lens geometric center is corrected by offset using the center-of-gravity deviation of the peripheral zone.
摘要:
Provided are a contact lens with a novel structure which can achieve an excellent lens-positioning performance in a circumferential direction in a worn state while ensuring a good wearing feeling and which can be easily manufactured with a high dimensional accuracy, and a method for manufacturing a contact lens. A peripheral part (24) of a contact lens (10) is provided with at least one thick portion (32) and at least one thin portion (30) that are capable of exhibiting a positioning effect in the circumferential direction in a worn state. In a change region (34) that connects the thick portion (32) to the thin portion (30), thickness changes are given respectively to a lens front surface (18) and to a lens rear surface (20).